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Showing 1 to 12 of 251 entries
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Preparation of Novel Pyridine-Based Aromatic Polyimides and Effect of Fluorine Functionality.

Journal of nanoscience and nanotechnology

Jang H, Lee S, Jin L, Pyo J, Tan F, Kim K, Kim W, Jeon HS.
PMID: 26726533
J Nanosci Nanotechnol. 2015 Nov;15(11):8451-9. doi: 10.1166/jnn.2015.11444.

Novel pyridine-containing linear and branched polyimides (Li-PIs and Br-PIs) were prepared by aromatic diamine and triamine monomers. The fluorinated, non-fluorinated and trifunctional pyridine-based monomers, 4-(4-(trifluoromethylphenyl))-2,6-bis(4-aminophenyl)pyridine (FDAPP), 4-phenyl-2,6-bis(4-aminophenyl)pyridine (DAPP) and 4,4',4"-(pyridine-2,4,6-triyl)tribenzenamine (TAPP) amino compounds were synthesized by a modified Chichibabin...

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Jang H, Lee S, Jin L, et al. Preparation of Novel Pyridine-Based Aromatic Polyimides and Effect of Fluorine Functionality. J Nanosci Nanotechnol. 2015;15(11):8451-9doi: 10.1166/jnn.2015.11444.
Jang, H., Lee, S., Jin, L., Pyo, J., Tan, F., Kim, K., Kim, W., & Jeon, H. S. (2015). Preparation of Novel Pyridine-Based Aromatic Polyimides and Effect of Fluorine Functionality. Journal of nanoscience and nanotechnology, 15(11), 8451-9. https://doi.org/10.1166/jnn.2015.11444
Jang, Hohyoun, et al. "Preparation of Novel Pyridine-Based Aromatic Polyimides and Effect of Fluorine Functionality." Journal of nanoscience and nanotechnology vol. 15,11 (2015): 8451-9. doi: https://doi.org/10.1166/jnn.2015.11444
Jang H, Lee S, Jin L, Pyo J, Tan F, Kim K, Kim W, Jeon HS. Preparation of Novel Pyridine-Based Aromatic Polyimides and Effect of Fluorine Functionality. J Nanosci Nanotechnol. 2015 Nov;15(11):8451-9. doi: 10.1166/jnn.2015.11444. PMID: 26726533.
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Benzaldehyde O-Alkyloximes as New Plant Growth Regulators.

Bioscience, biotechnology, and biochemistry

Yoshikawa H, Doi K.
PMID: 27392591
Biosci Biotechnol Biochem. 1998;62(5):996-7. doi: 10.1271/bbb.62.996.

Fourty-two kinds of benzaldehyde O-alkyloximes derived from benzaldehydes were prepared and their biological activities were investigated. Introduction of a fluorine or bromine atom to the benzene ring of the oximes enhanced their phytotoxic activity. The O-alkyloximes with a fluorine...

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Yoshikawa H, Doi K. Benzaldehyde O-Alkyloximes as New Plant Growth Regulators. Biosci Biotechnol Biochem. 1998;62(5):996-7doi: 10.1271/bbb.62.996.
Yoshikawa, H., & Doi, K. (1998). Benzaldehyde O-Alkyloximes as New Plant Growth Regulators. Bioscience, biotechnology, and biochemistry, 62(5), 996-7. https://doi.org/10.1271/bbb.62.996
Yoshikawa, H, and Doi, K. "Benzaldehyde O-Alkyloximes as New Plant Growth Regulators." Bioscience, biotechnology, and biochemistry vol. 62,5 (1998): 996-7. doi: https://doi.org/10.1271/bbb.62.996
Yoshikawa H, Doi K. Benzaldehyde O-Alkyloximes as New Plant Growth Regulators. Biosci Biotechnol Biochem. 1998;62(5):996-7. doi: 10.1271/bbb.62.996. PMID: 27392591.
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Improved Catalytic Activity and Stability of a Palladium Pincer Complex by Incorporation into a Metal-Organic Framework.

Journal of the American Chemical Society

Burgess SA, Kassie A, Baranowski SA, Fritzsching KJ, Schmidt-Rohr K, Brown CM, Wade CR.
PMID: 26813149
J Am Chem Soc. 2016 Feb 17;138(6):1780-3. doi: 10.1021/jacs.5b12366. Epub 2016 Feb 03.

A porous metal-organic framework Zr6O4(OH)4(L-PdX)3 (1-X) has been constructed from Pd diphosphinite pincer complexes ([L-PdX](4-) = [(2,6-(OPAr2)2C6H3)PdX](4-), Ar = p-C6H4CO2(-), X = Cl, I). Reaction of 1-X with PhI(O2CCF3)2 facilitates I(-)/CF3CO2(-) ligand exchange to generate 1-TFA and I2 as...

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Burgess SA, Kassie A, Baranowski SA, et al. Improved Catalytic Activity and Stability of a Palladium Pincer Complex by Incorporation into a Metal-Organic Framework. J Am Chem Soc. 2016;138(6):1780-3doi: 10.1021/jacs.5b12366.
Burgess, S. A., Kassie, A., Baranowski, S. A., Fritzsching, K. J., Schmidt-Rohr, K., Brown, C. M., & Wade, C. R. (2016). Improved Catalytic Activity and Stability of a Palladium Pincer Complex by Incorporation into a Metal-Organic Framework. Journal of the American Chemical Society, 138(6), 1780-3. https://doi.org/10.1021/jacs.5b12366
Burgess, Samantha A, et al. "Improved Catalytic Activity and Stability of a Palladium Pincer Complex by Incorporation into a Metal-Organic Framework." Journal of the American Chemical Society vol. 138,6 (2016): 1780-3. doi: https://doi.org/10.1021/jacs.5b12366
Burgess SA, Kassie A, Baranowski SA, Fritzsching KJ, Schmidt-Rohr K, Brown CM, Wade CR. Improved Catalytic Activity and Stability of a Palladium Pincer Complex by Incorporation into a Metal-Organic Framework. J Am Chem Soc. 2016 Feb 17;138(6):1780-3. doi: 10.1021/jacs.5b12366. Epub 2016 Feb 03. PMID: 26813149.
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Selectivity control in Pt-catalyzed cinnamaldehyde hydrogenation.

Scientific reports

Durndell LJ, Parlett CM, Hondow NS, Isaacs MA, Wilson K, Lee AF.
PMID: 25800551
Sci Rep. 2015 Mar 24;5:9425. doi: 10.1038/srep09425.

Chemoselectivity is a cornerstone of catalysis, permitting the targeted modification of specific functional groups within complex starting materials. Here we elucidate key structural and electronic factors controlling the liquid phase hydrogenation of cinnamaldehyde and related benzylic aldehydes over Pt...

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Durndell LJ, Parlett CM, Hondow NS, et al. Selectivity control in Pt-catalyzed cinnamaldehyde hydrogenation. Sci Rep. 2015;5:9425doi: 10.1038/srep09425.
Durndell, L. J., Parlett, C. M., Hondow, N. S., Isaacs, M. A., Wilson, K., & Lee, A. F. (2015). Selectivity control in Pt-catalyzed cinnamaldehyde hydrogenation. Scientific reports, 59425. https://doi.org/10.1038/srep09425
Durndell, Lee J, et al. "Selectivity control in Pt-catalyzed cinnamaldehyde hydrogenation." Scientific reports vol. 5 (2015): 9425. doi: https://doi.org/10.1038/srep09425
Durndell LJ, Parlett CM, Hondow NS, Isaacs MA, Wilson K, Lee AF. Selectivity control in Pt-catalyzed cinnamaldehyde hydrogenation. Sci Rep. 2015 Mar 24;5:9425. doi: 10.1038/srep09425. PMID: 25800551; PMCID: PMC4371104.
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Stopping Aerobic Oxidation in Its Tracks: Chemoselective Synthesis of Benzaldehydes from Methylarenes.

Angewandte Chemie (International ed. in English)

Lumb JP.
PMID: 28605566
Angew Chem Int Ed Engl. 2017 Aug 01;56(32):9276-9277. doi: 10.1002/anie.201704160. Epub 2017 Jun 12.

A practical and elegant solution to the long-standing challenge of methylarene partial oxidation has recently been provided by Pappo and co-workers who devised a catalytic aerobic route to benzaldehydes. The solution hinges on the unique hydrogen-bonding capacity of hexafluoroisopropanol,...

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Lumb JP. Stopping Aerobic Oxidation in Its Tracks: Chemoselective Synthesis of Benzaldehydes from Methylarenes. Angew Chem Int Ed Engl. 2017;56(32):9276-9277doi: 10.1002/anie.201704160.
Lumb, J. P. (2017). Stopping Aerobic Oxidation in Its Tracks: Chemoselective Synthesis of Benzaldehydes from Methylarenes. Angewandte Chemie (International ed. in English), 56(32), 9276-9277. https://doi.org/10.1002/anie.201704160
Lumb, Jean-Philip. "Stopping Aerobic Oxidation in Its Tracks: Chemoselective Synthesis of Benzaldehydes from Methylarenes." Angewandte Chemie (International ed. in English) vol. 56,32 (2017): 9276-9277. doi: https://doi.org/10.1002/anie.201704160
Lumb JP. Stopping Aerobic Oxidation in Its Tracks: Chemoselective Synthesis of Benzaldehydes from Methylarenes. Angew Chem Int Ed Engl. 2017 Aug 01;56(32):9276-9277. doi: 10.1002/anie.201704160. Epub 2017 Jun 12. PMID: 28605566.
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Synthesis and anticancer activity of novel quinazolinone-based rhodanines.

Chemistry Central journal

El-Sayed S, Metwally K, El-Shanawani AA, Abdel-Aziz LM, Pratsinis H, Kletsas D.
PMID: 29086906
Chem Cent J. 2017 Oct 13;11(1):102. doi: 10.1186/s13065-017-0333-x.

BACKGROUND: Rhodanines and quinazolinones have been reported to possess various pharmacological activities.RESULTS: A novel series of twenty quinazolinone-based rhodanines were synthesized via Knoevenagel condensation between 4-[3-(substitutedphenyl)-3,4-dihydro-4-oxoquinazolin-2-yl)methoxy]substituted-benzaldehydes and rhodanine. Elemental and spectral analysis were used to confirm structures of the...

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El-Sayed S, Metwally K, El-Shanawani AA, et al. Synthesis and anticancer activity of novel quinazolinone-based rhodanines. Chem Cent J. 2017;11(1):102doi: 10.1186/s13065-017-0333-x.
El-Sayed, S., Metwally, K., El-Shanawani, A. A., Abdel-Aziz, L. M., Pratsinis, H., & Kletsas, D. (2017). Synthesis and anticancer activity of novel quinazolinone-based rhodanines. Chemistry Central journal, 11(1), 102. https://doi.org/10.1186/s13065-017-0333-x
El-Sayed, Sherihan, et al. "Synthesis and anticancer activity of novel quinazolinone-based rhodanines." Chemistry Central journal vol. 11,1 (2017): 102. doi: https://doi.org/10.1186/s13065-017-0333-x
El-Sayed S, Metwally K, El-Shanawani AA, Abdel-Aziz LM, Pratsinis H, Kletsas D. Synthesis and anticancer activity of novel quinazolinone-based rhodanines. Chem Cent J. 2017 Oct 13;11(1):102. doi: 10.1186/s13065-017-0333-x. PMID: 29086906; PMCID: PMC5640562.
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Annulation of o-Quinodimethanes through N-Heterocyclic Carbene Catalysis for the Synthesis of 1-Isochromanones.

Organic letters

Janssen-Müller D, Singha S, Olyschläger T, Daniliuc CG, Glorius F.
PMID: 27549614
Org Lett. 2016 Sep 02;18(17):4444-7. doi: 10.1021/acs.orglett.6b02335. Epub 2016 Aug 23.

The activation of 2-(bromomethyl)benzaldehydes using N-heterocyclic carbenes represents a novel approach to the generation of o-quinodimethane (o-QDM) intermediates. Coupling with ketones such as phenylglyoxylates, isatins, or trifluoromethyl ketones via [4 + 2] annulation gives access to functionalized 1-isochromanones.

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Janssen-Müller D, Singha S, Olyschläger T, et al. Annulation of o-Quinodimethanes through N-Heterocyclic Carbene Catalysis for the Synthesis of 1-Isochromanones. Org Lett. 2016;18(17):4444-7doi: 10.1021/acs.orglett.6b02335.
Janssen-Müller, D., Singha, S., Olyschläger, T., Daniliuc, C. G., & Glorius, F. (2016). Annulation of o-Quinodimethanes through N-Heterocyclic Carbene Catalysis for the Synthesis of 1-Isochromanones. Organic letters, 18(17), 4444-7. https://doi.org/10.1021/acs.orglett.6b02335
Janssen-Müller, Daniel, et al. "Annulation of o-Quinodimethanes through N-Heterocyclic Carbene Catalysis for the Synthesis of 1-Isochromanones." Organic letters vol. 18,17 (2016): 4444-7. doi: https://doi.org/10.1021/acs.orglett.6b02335
Janssen-Müller D, Singha S, Olyschläger T, Daniliuc CG, Glorius F. Annulation of o-Quinodimethanes through N-Heterocyclic Carbene Catalysis for the Synthesis of 1-Isochromanones. Org Lett. 2016 Sep 02;18(17):4444-7. doi: 10.1021/acs.orglett.6b02335. Epub 2016 Aug 23. PMID: 27549614.
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Racemic and enantioselective metal-catalyzed synthesis of SF.

Organic & biomolecular chemistry

Desroches J, Tremblay A, Paquin JF.
PMID: 27714227
Org Biomol Chem. 2016 Sep 21;14(37):8764-8780. doi: 10.1039/c6ob01663d.

The racemic and enantioselective metal-catalyzed addition of arylboronic acids to 4- and 3-(pentafluorosulfur)benzaldehydes is reported. The racemic synthesis was accomplished using a Pd-based system and a wide range of arylboronic acids could be used, resulting in yields of 42...

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Desroches J, Tremblay A, Paquin JF. Racemic and enantioselective metal-catalyzed synthesis of SF. Org Biomol Chem. 2016;14(37):8764-8780doi: 10.1039/c6ob01663d.
Desroches, J., Tremblay, A., & Paquin, J. F. (2016). Racemic and enantioselective metal-catalyzed synthesis of SF. Organic & biomolecular chemistry, 14(37), 8764-8780. https://doi.org/10.1039/c6ob01663d
Desroches, Justine, et al. "Racemic and enantioselective metal-catalyzed synthesis of SF." Organic & biomolecular chemistry vol. 14,37 (2016): 8764-8780. doi: https://doi.org/10.1039/c6ob01663d
Desroches J, Tremblay A, Paquin JF. Racemic and enantioselective metal-catalyzed synthesis of SF. Org Biomol Chem. 2016 Sep 21;14(37):8764-8780. doi: 10.1039/c6ob01663d. PMID: 27714227.
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Nitrogen-boron coordination versus OH∙∙∙N hydrogen bonding in pyridoxaboroles - aza analogues of benzoxaboroles.

Dalton transactions (Cambridge, England : 2003)

Steciuk I, Durka K, Gontarczyk K, Dąbrowski M, Luliński S, Woźniak K.
PMID: 26328873
Dalton Trans. 2015 Oct 07;44(37):16534-46. doi: 10.1039/c5dt02402a.

Pyridoxaboroles - fused heterocyclic systems composed of pyridine and five-membered oxaborole rings - have been obtained for the first time from simple halopyridines. Thus, 6-butyl-2-(3'-bromo-4'-pyridyl)-(N-B)-1,3,6,2-dioxazaborocan obtained from 3-bromopyridine was converted into a lithio derivative by Br/Li exchange using nBuLi/THF...

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Steciuk I, Durka K, Gontarczyk K, et al. Nitrogen-boron coordination versus OH∙∙∙N hydrogen bonding in pyridoxaboroles - aza analogues of benzoxaboroles. Dalton Trans. 2015;44(37):16534-46doi: 10.1039/c5dt02402a.
Steciuk, I., Durka, K., Gontarczyk, K., Dąbrowski, M., Luliński, S., & Woźniak, K. (2015). Nitrogen-boron coordination versus OH∙∙∙N hydrogen bonding in pyridoxaboroles - aza analogues of benzoxaboroles. Dalton transactions (Cambridge, England : 2003), 44(37), 16534-46. https://doi.org/10.1039/c5dt02402a
Steciuk, I, et al. "Nitrogen-boron coordination versus OH∙∙∙N hydrogen bonding in pyridoxaboroles - aza analogues of benzoxaboroles." Dalton transactions (Cambridge, England : 2003) vol. 44,37 (2015): 16534-46. doi: https://doi.org/10.1039/c5dt02402a
Steciuk I, Durka K, Gontarczyk K, Dąbrowski M, Luliński S, Woźniak K. Nitrogen-boron coordination versus OH∙∙∙N hydrogen bonding in pyridoxaboroles - aza analogues of benzoxaboroles. Dalton Trans. 2015 Oct 07;44(37):16534-46. doi: 10.1039/c5dt02402a. PMID: 26328873.
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Supramolecular Columnar Liquid Crystals with Tapered-Shape Simple Pyrazoles Obtained by Efficient Henry/Michael Reactions.

Chemistry (Weinheim an der Bergstrasse, Germany)

Blanco H, Iguarbe V, Barberá J, Serrano JL, Elduque A, Giménez R.
PMID: 26890692
Chemistry. 2016 Mar 24;22(14):4924-30. doi: 10.1002/chem.201504779. Epub 2016 Feb 18.

A straightforward synthesis of mesogenic pyrazoles starting from benzaldehydes by a combination of efficient Henry and Michael reactions led to novel supramolecular liquid crystals. The mesogens are fluorescent 3,5-dimethyl-4-(di or trialkoxyphenyl)pyrazoles and, in spite of the tapered shape of...

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Blanco H, Iguarbe V, Barberá J, et al. Supramolecular Columnar Liquid Crystals with Tapered-Shape Simple Pyrazoles Obtained by Efficient Henry/Michael Reactions. Chemistry. 2016;22(14):4924-30doi: 10.1002/chem.201504779.
Blanco, H., Iguarbe, V., Barberá, J., Serrano, J. L., Elduque, A., & Giménez, R. (2016). Supramolecular Columnar Liquid Crystals with Tapered-Shape Simple Pyrazoles Obtained by Efficient Henry/Michael Reactions. Chemistry (Weinheim an der Bergstrasse, Germany), 22(14), 4924-30. https://doi.org/10.1002/chem.201504779
Blanco, Hugo, et al. "Supramolecular Columnar Liquid Crystals with Tapered-Shape Simple Pyrazoles Obtained by Efficient Henry/Michael Reactions." Chemistry (Weinheim an der Bergstrasse, Germany) vol. 22,14 (2016): 4924-30. doi: https://doi.org/10.1002/chem.201504779
Blanco H, Iguarbe V, Barberá J, Serrano JL, Elduque A, Giménez R. Supramolecular Columnar Liquid Crystals with Tapered-Shape Simple Pyrazoles Obtained by Efficient Henry/Michael Reactions. Chemistry. 2016 Mar 24;22(14):4924-30. doi: 10.1002/chem.201504779. Epub 2016 Feb 18. PMID: 26890692.
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Detection and Reaction of Oxaphosphetanes Derived from Benzaldehyde and 1-Adamantylmethylidene Ylide.

The Journal of organic chemistry

Yamataka H, Takatsuka T, Hanafusa T.
PMID: 11666996
J Org Chem. 1996 Jan 26;61(2):722-726. doi: 10.1021/jo951025x.

The Wittig reaction of (1-adamantylmethylidene)triphenylphosphorane (Ph(3)P=CH(1-Ad)) with benzaldehyde was investigated, and the results were compared with those of other ylides. The substituent effect in the reaction of the ylide with benzaldehydes was determined by competition experiments, which gave a...

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Yamataka H, Takatsuka T, Hanafusa T. Detection and Reaction of Oxaphosphetanes Derived from Benzaldehyde and 1-Adamantylmethylidene Ylide. J Org Chem. 1996;61(2):722-726doi: 10.1021/jo951025x.
Yamataka, H., Takatsuka, T., & Hanafusa, T. (1996). Detection and Reaction of Oxaphosphetanes Derived from Benzaldehyde and 1-Adamantylmethylidene Ylide. The Journal of organic chemistry, 61(2), 722-726. https://doi.org/10.1021/jo951025x
Yamataka, Hiroshi, et al. "Detection and Reaction of Oxaphosphetanes Derived from Benzaldehyde and 1-Adamantylmethylidene Ylide." The Journal of organic chemistry vol. 61,2 (1996): 722-726. doi: https://doi.org/10.1021/jo951025x
Yamataka H, Takatsuka T, Hanafusa T. Detection and Reaction of Oxaphosphetanes Derived from Benzaldehyde and 1-Adamantylmethylidene Ylide. J Org Chem. 1996 Jan 26;61(2):722-726. doi: 10.1021/jo951025x. PMID: 11666996.
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Stereoselective Reactions of N-(9-Phenylfluoren-9-yl)-4-oxoproline Enolates. An Expedient Route for the Preparation of Conformationally Restricted Amino Acid Analogues.

The Journal of organic chemistry

Blanco MJ, Paleo MR, Penide C, Sardina FJ.
PMID: 11674780
J Org Chem. 1999 Nov 26;64(24):8786-8793. doi: 10.1021/jo990283h.

Methodology for the stereoselective preparation of 3-alkylprolines from N-(9-phenylfluoren-9-yl)-4-oxoproline is presented. The enolate of a N-(9-phenylfluoren-9-yl)-4-oxoproline ester was shown to give stereoselective aldol condensations with aromatic and aliphatic aldehydes. The enolate was preferentially approached by the electrophile through the...

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Blanco MJ, Paleo MR, Penide C, et al. Stereoselective Reactions of N-(9-Phenylfluoren-9-yl)-4-oxoproline Enolates. An Expedient Route for the Preparation of Conformationally Restricted Amino Acid Analogues. J Org Chem. 1999;64(24):8786-8793doi: 10.1021/jo990283h.
Blanco, M. J., Paleo, M. R., Penide, C., & Sardina, F. J. (1999). Stereoselective Reactions of N-(9-Phenylfluoren-9-yl)-4-oxoproline Enolates. An Expedient Route for the Preparation of Conformationally Restricted Amino Acid Analogues. The Journal of organic chemistry, 64(24), 8786-8793. https://doi.org/10.1021/jo990283h
Blanco, María-Jesús, et al. "Stereoselective Reactions of N-(9-Phenylfluoren-9-yl)-4-oxoproline Enolates. An Expedient Route for the Preparation of Conformationally Restricted Amino Acid Analogues." The Journal of organic chemistry vol. 64,24 (1999): 8786-8793. doi: https://doi.org/10.1021/jo990283h
Blanco MJ, Paleo MR, Penide C, Sardina FJ. Stereoselective Reactions of N-(9-Phenylfluoren-9-yl)-4-oxoproline Enolates. An Expedient Route for the Preparation of Conformationally Restricted Amino Acid Analogues. J Org Chem. 1999 Nov 26;64(24):8786-8793. doi: 10.1021/jo990283h. PMID: 11674780.
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Showing 1 to 12 of 251 entries